Electrochemiluminescent Detection of Metal Cations Using a Ruthenium(II) Bipyridyl Complex Containing a Crown Ether Moiety

Abstract

The effects of metal ions on the electrochemiluminescence (ECL) properties of (bpy)2Ru(AZA-bpy) (bpy = 2,2‘-bipyridine; AZA-bpy = 4-(N-aza-18-crown-6-methyl-2,2‘-bipyridine) have been investigated. The electrochemistry, photophysics and ECL of Ru(bpy)32+ in the presence of Pb2+, Hg2+, Cu2+, and K+ are reported. The anodic oxidation of Ru(bpy)32+ produces ECL in the presence of tri-n-propylamine (TPrA) in 50:50 (v/v) CH3CN:H2O solution. Increases in ECL efficiency (photons generated per redox event) up to 20-fold that depend on both the concentration and nature of the metal ion have been observed, making this an interesting system for electrochemiluminescence metal ion sensing.

Department(s)

Chemistry and Biochemistry

Document Type

Article

DOI

https://doi.org/10.1021/ac010872z

Keywords

photoluminescence, mercury, metals, cations, ions

Publication Date

2002

Journal Title

Analytical chemistry

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